Temperature and Pressure Relief Valve Inlet Type MNPT Outlet Type FNPT Inlet Size 3/4 in Outlet Size 3/4 in Thermostat Length 4 in Body Height 3 1/2 in 105 000 BtuH Factory Set Pressure 125 psi Max Temp 210 Degrees F Shank Length Standard Auto Re-Seating Yes Body Material Bronze Spring Material Stainless Steel Body Width 1 3/4 in Standards ANSI Z21.22 ASME Rated CSA